Wiryanto, Leo Hari and Widyawati, Ratna and Fauzi, R and Putra, Gusrian and Noviani, E (2022) Similarity Check Simulation of Wave Propagation on Thin Film. Pushpa Publishing House, India. (Submitted)


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Official URL: http://www.pphmj.com/abstract/14499.htm


We are concerned with fluid having very small thickness flowing on an inclined bottom. The thickness of the fluid varies by changing time, so that it forms wave propagation, and we observe the wave profile. Since the fluid is thin, it can be modelled based on the theory of lubrication. We formulate the model into a single equation of the fluid thickness with the boundary conditions. The viscosity and the surface tension are two physical parameters considered in the wave evolution. The difficulty in solving the equation is strongly non-linearity of the model. Therefore, to deal with the non-linearity, we used a numerical approach, i.e., forward time central space (FTCS). The stability is analyzed before we apply it to the equation, so that we can simulate the wave. We obtain that the wave changes the form into almost shock. Keywords and phrases: thin film, lubrication theory, forward time central space, stability condition.

Item Type: Other
Subjects: T Technology > TA Engineering (General). Civil engineering (General)
Divisions: Fakultas Teknik (FT) > Prodi Teknik Sipil
Depositing User: RATNA WIDYAWATI
Date Deposited: 22 May 2023 06:18
Last Modified: 22 May 2023 06:18
URI: http://repository.lppm.unila.ac.id/id/eprint/51946

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